Cooking classes, kids area and samples galore; Sessions for professionals, too CHICAGO, Apr. 8, 2011 – To spare those on special diets another day of hockey-puck provisions, the Gluten & Allergen Free Expo (www.gfafexpo.com), April 29 through May 1, is bringing the nation’s leading chefs, best-selling cookbook authors, and highly regarded nutrition and health experts to Chicagoland to help people ...